const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin');


module.exports = {
    entry: './src/main.js',
    output: {
        filename: 'app.js',
        path: path.join(__dirname, 'dist'),
    },
    plugins: [new HtmlWebpackPlugin({
        template: path.join(__dirname, 'public/index.html')
    })],
    module: {
        rules: [
            {
                test: /\.css$/i,
                use: ["style-loader", "css-loader"],
            },
            {
                test: /\.less$/i,
                use: [
                    // compiles Less to CSS
                    'style-loader',
                    'css-loader',
                    'less-loader',
                ],
            },
            { // 针对资源模块（图片，字体文件，图标文件等）处理
                test: /\.(png|jpg|jpeg|gif)$/i,
                type: 'asset', // 根据文件大小（8KB）小于：把文件转成 base64 打包进 js 文件中（减少网络请求次数）大于：文件复制到输出的目录下
                generator: { // 输出文件时，路径+名字
                    filename: 'assets/[hash][ext]'
                }
            },
            {
                test: /\.m?js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env']
                    }
                }
            },
        ],
    },
    devtool:'inline-source-map'
};